10B11EC514

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COMMUNICATION SYSTEMS

(Core Subject)

Course Code: 10B11EC514 Semester: 5th Semester, B. Tech

(CSE/IT)

Credits: 4 Contact Hours: L-3, T-1,P-2

Course Objectives1.

To introduce the concept of communication system.

2. To make the students to know the constituents of the communication systems such as transmitter, receiver and

channel with their features.

3.

To enhance the understanding of communication system and device.

Course OutcomesThis course provides the knowledge of analog and digital communication system analysis and design. After study

through lectures and assignments, students will be able to:

1. Formulate and interpret the presentation and processing of signals in communication systems.

2.

Assess and evaluate different analog and digital modulation and demodulation techniques

3. Develop an ability to compare and contrast the strengths and weaknesses of various communication systems.

4. Evaluate the influence of noise on communications signals.

5.

Understand the state-of-art of the communication systems.

Course Contents

S.

No.

Unit Contents Lecture

s

1. Introduction Review of Signals and Systems, Review ofFourier Analysis, Elements of a communication

system, Introduction to Modulation, Need of

Modulation in Communication Systems,

bandlimited signals and systems, bandwidth,

time-limited and frequency-limited signals.

Text Book 1, Chapter 1,

Pages 1-12;


Pages 1-51.

3

2. Amplitude modulation Amplitude Modulation, DSBSC, SSBSC, VSBmodulation, Generation and detection of AM

signals: Coherent detection, Envelope detection,

Generation and detection of DSBSC, SSBSC

signals.


Pages 151-191;


Pages 100-135.

6

3. Angle modulation Concepts of FM and PM, Narrowband andWideband FM, Carsons rule, Generation and

detection of FM signals


Pages 208-245;6 1, Pages

281-270

5

4 Analog Communication

SystemsHomo/Hetro/Superhetrodyne Receivers, Multiplexi

TDM, FDM, QCM, PLL

Text Book 2, Chapter 4, Pages

140-185

4

5. Performance of Modulation

Systems in presence of

noise

Study of channel noise performance for various

modulation schemes.


Pages 532-567;

4

------- Mid Semester

Examination

---------- Lectures

for Mid

Term-22

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Evaluation SchemeMid Semester Examination-30End Semester Examination-45Continuous Evaluation-25 (Att.-5, Assignments/Tutorials-10, Quiz/Presentation-10)Total-100

Text Books1. Modern Digital and Analog Communication by B P Lathi, Oxford University Press.

2. Electronic Communications Systems, by W. Tomasi, Pearson.

Reference Books1. Communication Systems 4

thEdition by Simon Haykin, John Wiley

Communication Systems by Bruce Carlson, McGrawHill.

6. Sampling and Pulsemodulation techniques

Sampling theorem, time and frequency domain

analysis of sampling , aliasing effect, under

sampling and oversampling, practical sampling,

Reconstruction of signals, PAM, PPM, PWM

generation & demodulation methods.


Pages 251-281;


Pages 667-703.

3

7. Baseband DigitalTransmission

Overview of Digital Communication Systems

(DCS) - Merits and Demerits, PAM Signals

Signaling rate (Baud)-Data Rate- Line codes

(Unipolar, Polar, Bipolar, Manchester),

Transmission Limitations ISI Eye Pattern-

Regenerators, Matched Filtering Optimum

Terminal filters, Equalization.


Pages 467-51

6

8. Analog to Digital

Conversion

Quantization, Quantization Noise, Pulse code

ModulationPCM generation and reconstruction-

Differential PCM, DM and ADM.


Pages 251-281;

5

9. Digital ModulationTechniques

ASK, FSK ,PSK, QPSK Modulation,

Demodulation, Constellation diagrams,

Comparison of digital modulation systems


Pages 577-608;


Pages 471-507

6

10 Error Correcting Codes Introduction, Linear block code, cyclic code,

convolution code


Pages 728-747;

3

Total number of Lectures 45

Documents

10B11EC514